there was no actual timestamping so we cannot understand precisely how much time it took, or average timing of each one, and it is a data we are absolutely not interested in, quality is the priority. But:

Each image consisted of 256 bitsthere was a total of 256 images

So, we have a romsize of 65.536 bits, that is 8kb

All images were typed three timesSo we have a grand total of 196.608 bits typed

Annnounce was doone at 9.37PM of 18MAR and completed was announced at 1.23PM of 19MAR. That mans that we took less than 16 hours to do the job